I want to check if any character in a string is alphanumeric. I wrote the following code for that and it's working fine:
s = input()
temp = any(i.isalnum() for i in s)
print(temp)
The question I have is the below code, how is it different from the above code:
for i in s:
if any(i.isalnum()):
print(True)
The for-loop iteration is still happening in the first code so why isn't it throwing an error? The second code throws:
Traceback (most recent call last): File "", line 18, in TypeError: 'bool' object is not iterable
In your second function you apply any
to a single element and not to the whole list. Thus, you get a single bool element if character i
is alphanumeric.
In the second case you cannot really use any
as you work with single elements. Instead you could write:
for i in s:
if i.isalnum():
print(True)
break
Which will be more similar to your first case.